@article{DE_2005_41_12_a5,
     author = {E. K. Makarov and I. V. Marchenko},
     title = {On an {Algorithm} for {Constructing} an {Attainable} {Upper} {Boundary} for the {Higher} {Exponent} of {Perturbed} {Systems}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1621--1634},
     publisher = {mathdoc},
     volume = {41},
     number = {12},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2005_41_12_a5/}
}